Defensive publication

ABSTRACT

PHOTOGRAPHIC ELEMENTS ARE DISCLOSED COMPRISING A SILVER HALIDE EMULSION HAVING ASSOCIATED THEREWITH AS AN IMAGE-FORMING DYE DEVELOPER, A QUINIZARIN, PREFERABLY HAVING THE FORMULA:   WHEREIN X IS HYDROXYL OR AMINO AND Y IS HYDROGEN, HYDROXYL, AMINO, SUBSTITUTED AMINO, SUBSTITUTED OR UNSUBSTITUTED LOWER ALKLY OR ALKOXY CONTAINING 1 TO 5 CARBON ATOMS, CYANO, CHLORO, BROMO OR IODO. IN A DIFFUSION TRANSFER SYSTEM, A DIFFUSIBLE DYE IS FORMMED AFTER TREATING THE EXPOSED SILVER HALIDE WITH AN ALKALINE PROCESSING SOLUTION. THE DIFFUSIBLE DYE DIFFUSES TO A DYE IMAGE-RECEIVING LAYER TO PROVIDE A POSITIVE DYE IMAGE. THE DYE IMAGERECEIVING LAYER MAY BE LOCATED INTEGRAL WITH THE PHOTOSENSITIVE ELEMENT OR MAY BE LOCATED ON A SEPARATE SUPPORT ADAPTED TO BE SUPERPOSED ON THE PHOTOSENSITIVE ELEMENT AFTER EXPOSURE THEREOF.

DEFENSIVE PUBLICATION UNITED STATES PATENT OFFICE Published at the request of the applicant or owner in accordance with the Notice of Dec. 16, 1969, 869 0.G. 687. The abstracts 01! Defensive Publication applications are identified by distinctly numbered series and are arranged chronologically. The heading of each abstract indicates the number of pages of specification, including claims and sheets of drawings contained in the application as originally filed. The files of these applications are available to the public for inspection and reproduction may be purchased for 30 cents a sheet.

Defensive Publication applications have not been examined as to the merits of alleged invention. The Patent Oiiice makes no assertion as to the novelty of the disclosed subject matter.

PUBLISHED AUGUST 31, 1971 T889,i)17 USE OF QUINIZARIN AS AN IMAGE-FORMING DYE DEVELOPER Judith M. Harbison, Kodak Park, Rochester, N.Y. 14650 Filed Sept. 25, 1970, Ser. No. 75,787 Int. Cl. G03c 1/40, 5/54 US. Cl. 96-29 No Drawing. 15 Pages Specification Photographic elements are disclosed comprising a silver halide emulsion having associated therewith as an image-forming dye developer, 3. quinizarin, preferably having the formula:

wherein X is hydroxyl or amino and Y is hydrogen, hydroxyl, amino, substituted amino, substituted or unsubstituted lower alkyl or alkoxy containing 1 to 5 carbon atoms, eyano, chloro, bromo or iodo. In a diffusion transfer system, a difiusible dye is formed after treating the exposed silver halide with an alkaline processing solution. The diifusible dye diffuses to a dye image-receiving layer to provide a positive dye image. The dye imagereceiving layer may be located integral with the photosensitive element or may be located on a separate support adapted to be superposed on the photosensitive element after exposure thereof. 

